| Expression | Cut down to | Comment |
|---|---|---|
| cabernet | cab | |
| cabin | cab | |
| cabinet | cab | |
| caesarian section | c section | |
| calculus [, infinitesimal] | calc | |
| calory | cal | |
| camera | cam | |
| camouflage | camo | as verb or noun |
| capacitor | cap | |
| capital letters | caps | |
| carnival | carny | |
| cartoon | toon | |
| category | cat | |
| celebrity | celeb | |
| certificate | cert | |
| communication(s) | com | |
| compact | comp | |
| company | comp | |
| compensation | comp | |
| compilation | comp | |
| complementary | comp | |
| complimentary | comp | |
| composite | comp | |
| composition | comp | |
| computer | comp | |
| condominium | condo | |
| confidence artist | con (artist) | full form rarely in use |
| conservative | con | |
| contra | con | as in "pros and cons" |
| convention | con | |
| convict | con | reference: film "Con Air" |
| Corvette | vette | |
| counter editorial | op-ed | because it's traditionally printed on the page opposite to where editorial goes |
| credentials | cred | |
| credibility | cred | |
| crocodile | croc | |
| cucumber | cuke |